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Georgia [21]
3 years ago
10

Which best describes a chain reaction associated with a nuclear reaction?

Physics
1 answer:
mojhsa [17]3 years ago
8 0
I think fission chain reaction is the correct answer.
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Radio waves travel at 3.00 · 108 m/s. Calculate the wavelength of a radio wave of frequency 900 kHz. (9.00 · 105 Hz.)
Anuta_ua [19.1K]
V: velocity of wave
f: frequency 
L: wavelenght

v = fL => L = v/f => L = (3x10^8)/(900x10^3) => L = 3.33 x 10^2m
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3 years ago
I need help with the graphs
Viefleur [7K]
For heating Solid, Liquid, Gas and for cooling the opposite Gas, Liquid, Solid
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3 years ago
How does the electrostatic force compare with the strong nuclear force in the
diamong [38]

Answer:

Strong nuclear force is 1-2 order of magnitude larger than the electrostatic force

Explanation:

There are mainly two forces acting between protons and neutrons in the nucleus:

- The electrostatic force, which is the force exerted between charged particles (therefore, it is exerted between protons only, since neutrons are not charged). The magnitude of the force is given by

F_E=\frac{kq_1 q_2}{r^2}

where k is the Coulomb's constant, q1 and q2 are the  charges of the two particles, r is the separation between the particles.

The force is attractive for two opposite charges and repulsive for two same charges: therefore, the electrostatic force between two protons is repulsive.

- The strong nuclear force, which is the force exerted between nucleons. At short distance (such as in the nucleus), it is attractive, therefore neutrons and protons attract each other and this contributes in keeping the whole nucleus together.

At the scale involved in the nucleus, the strong nuclear force (attractive) is 1-2 order of magnitude larger than the electrostatic force (repulsive), therefore the nucleus stays together and does not break apart.

3 0
3 years ago
Read 2 more answers
Place the following structures in the appropriate category based on their location in a cell
Studentka2010 [4]

Answer:

Cell surface.

  • Cilium
  • Plasma membrane
  • Microvilus.

Nucleus

  • Cellular DNA
  • Nucleolus
  • Chromosome.

Cytoplasm

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3 0
3 years ago
if a modern home is built too tightly, the air change rate per hour is reduced. Ventilation may be increased to safe levels by _
Galina-37 [17]

Answer:Mechanical ventilation system

Explanation:

Ventilation can be increased to safe levels by using mechanical ventilation system to bring in more fresh air.

There are many ways to provide ventilation for example

  • providing ventilation fans in kitchens and bathrooms to remove allergens,moisture.
  • A duct should be provided such that it provides fresh air to different rooms and provision should also be made to remove the poor air inside home.

8 0
3 years ago
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